Continuous condensation reaction system for preparing chlorfenapyr
By designing a continuous condensation reaction system, the synchronous mixing, condensation and standstilling processes in the production of mites are solved, and the problem of poor continuity of the preparation process in the prior art is significantly improved.
Patent Information
- Application Number
- CN202421164511.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing production process of nitrile has poor continuity in the preparation process, resulting in low production efficiency.
A continuous condensation reaction system for preparation of nitrile is designed. Through the condensation kettle body with a split structure, the mixing, condensation and standstilling processes are synchronized, thereby improving the continuity of the feeding process.
The continuous preparation of nitrile is achieved, which significantly improves production efficiency and improves the continuity of the preparation process.
Smart Images
Figure CN222658654U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a continuous condensation reaction system for preparing chlorfenapyr, and belongs to the technical field of chlorfenapyr preparation. Background Art
[0002] Chlorfenapyr, also known as chlorfenapyr, is a white crystalline powder. It is a highly effective and low-toxic insecticide with both stomach poison and contact effects. It has strong permeability on the leaf surface and a certain systemic effect. It has the characteristics of broad insecticide spectrum, high prevention effect, long-lasting effect and safety. The raw materials of bromopyrrole nitrile and chloromethyl ether are used to react with toluene as solvent and triethylamine as acid-binding agent to generate chlorfenapyr. After desolventizing and recovering toluene, the product chlorfenapyr is further crystallized with methanol, centrifuged and dried.
[0003] At present, the production of chlorfenapyr is mostly intermittent production, that is, the mixing, condensation, and standing process steps are carried out in sequence in the inner cavity of a reactor, and each step is carried out in sequence. After the preparation and export of the previous batch of materials are completed, the next batch of materials can be imported and prepared, resulting in poor continuity of the preparation process and the need to improve production efficiency.
[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content
[0005] The utility model aims at the deficiencies in the background technology and provides a continuous condensation reaction system for preparing chlorfenapyr, which can make the mixing, condensation and standing steps proceed synchronously, improve the continuity of the feeding process, realize the continuous preparation of chlorfenapyr, and significantly improve its production efficiency.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A continuous condensation reaction system for preparing chlorfenapyr comprises a condensation kettle body, which is arranged in a vertical direction and has a split structure. The condensation kettle body is composed of a premixing kettle body, a reaction kettle body and a static kettle body. The bottom end of the premixing kettle body is connected to the top end of the reaction kettle body, and the bottom end of the reaction kettle body is connected to the top end of the static kettle body.
[0008] A first solenoid valve is installed at the bottom of the premixing kettle, and a second solenoid valve is installed at the bottom of the reaction kettle;
[0009] A vertically arranged main rotating shaft is installed in the inner cavity of the premixing kettle body and the reactor body, and two groups of stirring blades are installed on the main body of the main rotating shaft, one group of stirring blades is located at the bottom of the inner cavity of the premixing kettle body, and the other group of stirring blades is located at the bottom of the inner cavity of the reactor body.
[0010] Furthermore, a feed port is provided on the top of the condensation kettle body, and the feed port is connected to the bromopyrrolecarbonitrile metering tank, the toluene metering tank, the triethylamine metering tank and the chloromethyl ether metering tank through a pipeline, and a feed valve is installed on the pipeline.
[0011] Furthermore, the top ends of the reaction kettle body and the static kettle body are both opened.
[0012] Furthermore, the connection ends between the premixing kettle body and the reaction kettle body, and between the reaction kettle body and the static kettle body are both provided with annular connection parts.
[0013] Furthermore, the annular connecting portion is provided with bolt holes.
[0014] Furthermore, the top end of the main rotating shaft is connected to the driving motor above the premixing kettle body, and the bottom end of the main rotating shaft is rotatably installed in a bearing seat, and the bearing seat is located below the bottom of the reactor body.
[0015] Furthermore, the exteriors of the premixing kettle body, the reaction kettle body and the static kettle body are all provided with temperature control jackets.
[0016] Furthermore, a discharge port is provided at the bottom of the static kettle body.
[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:
[0018] The utility model can realize the continuous preparation of chlorfenapyr. While the upper batch of materials reacts in the reactor body, the lower batch of materials is premixed in the premixing reactor body. While the upper batch of materials is standing in the standing reactor body, the lower batch of materials reacts in the reactor body. The circulation is sequentially performed to make the mixing, condensation and standing processes synchronously performed, which can improve the continuity of the feeding process, realize the continuous preparation of chlorfenapyr, and significantly improve its production efficiency.
[0019] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the utility model;
[0021] Figure 2 It is a schematic diagram of the internal structure of the condensation kettle;
[0022] Figure 3 It is a schematic diagram of the structural decomposition of the condensation kettle.
[0023] In the figure, 1-condensation kettle body, 11-premixing kettle body, 12-reaction kettle body, 13-stationary kettle body, 14-annular connecting part, 15-first solenoid valve, 16-second solenoid valve, 17-main shaft, 18-stirring blades, 19-bearing seat, 110-temperature control jacket, 111-discharge port; 2-bromopyrrolecarbonitrile metering tank, 3-toluene metering tank, 4-triethylamine metering tank, 5-chloromethyl ether metering tank. DETAILED DESCRIPTION
[0024] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.
[0025] like Figure 1-Figure 3 As shown together, the utility model provides a continuous condensation reaction system for preparing chlorfenapyr, comprising a condensation kettle body 1. A feed port is provided on the top of the condensation kettle body 1. The feed port is connected to a bromopyrrole nitrile metering tank 2, a toluene metering tank 3, a triethylamine metering tank 4 and a chloromethyl ether metering tank 5 through a pipeline, and a feed valve is installed on the pipeline.
[0026] The condensation kettle body 1 is arranged in a vertical direction and adopts a split structure. The condensation kettle body 1 is composed of a premixing kettle body 11 , a reaction kettle body 12 and a stationary kettle body 13 .
[0027] The top ends of the reaction kettle body 12 and the static kettle body 13 are both opened.
[0028] The bottom end of the premixing kettle body 11 is connected to the top end of the reaction kettle body 12, and the bottom end of the reaction kettle body 12 is connected to the top end of the static kettle body 13. The connection ends between the premixing kettle body 11 and the reaction kettle body 12 and between the reaction kettle body 12 and the static kettle body 13 are both provided with an annular connection part 14.
[0029] The annular connecting portion 14 is provided with bolt holes for passing bolts, so that adjacent kettle bodies can be assembled conveniently.
[0030] A first solenoid valve 15 is installed at the bottom of the premixing kettle body 11 , and the first solenoid valve 15 controls the reaction liquid in the inner cavity of the premixing kettle body 11 to flow to the inner cavity of the reaction kettle body 12 .
[0031] A second solenoid valve 16 is installed at the bottom of the reaction kettle body 12 , and the second solenoid valve 16 controls the reaction liquid in the inner cavity of the reaction kettle body 12 to flow to the inner cavity of the stationary kettle body 13 .
[0032] A vertically arranged main rotating shaft 17 is installed in the inner cavity of the premixing kettle body 11 and the reaction kettle body 12. The top end of the main rotating shaft 17 is connected to the driving motor above the premixing kettle body 11, and the bottom end of the main rotating shaft 17 is rotatably installed in a bearing seat 19, which is located below the bottom of the reaction kettle body 12.
[0033] Two groups of stirring blades 18 are installed on the main body of the main rotating shaft 17 , one group of stirring blades 18 is located at the bottom of the inner cavity of the premixing kettle body 11 , and the other group of stirring blades 18 is located at the bottom of the inner cavity of the reaction kettle body 12 .
[0034] The premixing kettle body 11 , the reaction kettle body 12 and the static kettle body 13 are all provided with temperature control jackets 110 on the outside. Different temperature control jackets 110 are used to adjust the temperature in different kettle bodies.
[0035] A discharge port 111 is provided at the bottom of the static kettle body 13 .
[0036] The specific working principle of this utility model:
[0037] A certain amount of toluene, triethylamine, chloromethyl ether and bromopyrrole nitrile are pumped into the premixing kettle 11 of the condensation kettle 1, and premixed for a certain period of time under the action of the stirring blade 18; after the premixing is completed, the first solenoid valve 15 is opened, and the reaction liquid flows into the reaction kettle 12, and fully reacts under the action of the stirring blade 18; after the reaction is completed, the second solenoid valve 16 is opened, and the reaction liquid flows into the inner cavity of the static kettle 13 for static stratification; after the stratification is completed, it is discharged through the discharge port 111;
[0038] The utility model can realize the continuous preparation of chlorfenapyr. While the upper batch of materials reacts in the reactor body 12, the lower batch of materials is premixed in the premixing reactor body 11. While the upper batch of materials is stationary in the stationary reactor body 13, the lower batch of materials reacts in the reactor body 12. The sequential circulation can improve the continuity of the feeding process, realize the continuous preparation of chlorfenapyr, and significantly improve its production efficiency.
[0039] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.
Claims
1. A continuous condensation reaction system for preparing chlorfenapyr, characterized in that: The condensation kettle body (1) comprises a condensation kettle body (1), the condensation kettle body (1) is arranged in a vertical direction, the condensation kettle body (1) adopts a split structure, the condensation kettle body (1) comprises a premixing kettle body (11), a reaction kettle body (12) and a static kettle body (13), the bottom end of the premixing kettle body (11) is connected to the top end of the reaction kettle body (12), and the bottom end of the reaction kettle body (12) is connected to the top end of the static kettle body (13); A first solenoid valve (15) is installed at the bottom of the premixing kettle (11), and a second solenoid valve (16) is installed at the bottom of the reaction kettle (12); A vertically arranged main rotating shaft (17) is installed in the inner cavities of the premixing kettle body (11) and the reaction kettle body (12); two groups of stirring blades (18) are installed on the main body of the main rotating shaft (17); one group of stirring blades (18) is located at the bottom of the inner cavity of the premixing kettle body (11), and the other group of stirring blades (18) is located at the bottom of the inner cavity of the reaction kettle body (12).
2. The continuous condensation reaction system for preparing chlorfenapyr according to claim 1, characterized in that: A feed port is provided on the top of the condensation kettle body (1), and the feed port is connected to the bromopyrrole nitrile metering tank (2), the toluene metering tank (3), the triethylamine metering tank (4) and the chloromethyl ether metering tank (5) through a pipeline, and a feed valve is installed on the pipeline.
3. The continuous condensation reaction system for preparing chlorfenapyr according to claim 1, characterized in that: The top ends of the reaction kettle body (12) and the static kettle body (13) are both opened.
4. The continuous condensation reaction system for preparing chlorfenapyr according to claim 1, characterized in that: The connection ends between the premixing kettle body (11) and the reaction kettle body (12), and between the reaction kettle body (12) and the static kettle body (13) are both provided with an annular connection portion (14).
5. The continuous condensation reaction system for preparing chlorfenapyr according to claim 4, characterized in that: The annular connecting portion (14) is provided with bolt holes.
6. The continuous condensation reaction system for preparing chlorfenapyr according to claim 1, characterized in that: The top end of the main rotating shaft (17) is connected to a driving motor above the premixing kettle body (11), and the bottom end of the main rotating shaft (17) is rotatably mounted in a bearing seat (19), and the bearing seat (19) is located below the bottom of the reaction kettle body (12).
7. The continuous condensation reaction system for preparing chlorfenapyr according to claim 1, characterized in that: The exteriors of the premixing kettle body (11), the reaction kettle body (12) and the static kettle body (13) are all provided with temperature control jackets (110).
8. The continuous condensation reaction system for preparing chlorfenapyr according to claim 1, characterized in that: A discharge port (111) is provided at the bottom of the static kettle body (13).